The guiding ideology, principles and procedures of Shenzhen Double Ten precision instrument design

Date:2020/12/9 8:43:03 / Read: / Source:本站

The guiding ideology, principles and procedures of Shenzhen Double Ten precision instrument design
 1. Design guidelines
1. Accuracy requirements: For measuring instruments, the most important thing is accuracy. According to different instruments and different measurement conditions,
 The corresponding static or dynamic accuracy characteristic index. The accuracy of the instrument should be reasonable. Regardless of the object, the higher the accuracy of the instrument, the better.
 Actually it is completely unnecessary. The accuracy of the instrument should be determined according to the accuracy requirements of the measured object in practice. The measurement of general instruments
 The error is based on the tolerance of the tested part] I3, sometimes 1/5 or 1/!0 of the tolerance of the tested part. The accuracy requirements of the instrument parts should also be met.
 It should not require high precision of all parts of the instrument,
 Strict accuracy requirements are specified for the key parts in the. Shenzhen Double Ten
And only those parts directly involved in the measurement in the instrument, that is, the measurement chain
2. Economic requirements: When designing instruments, you should not blindly pursue complex and advanced solutions.
 The solution can meet the proposed functional requirements, so this solution is the most economical design solution.
 If you can use some of the simplest Shenzhen Double Ten
It means fewer parts, fewer components, high reliability, low cost, etc. Generally speaking,
 Because of the simplest plan
 A simple solution is more economical, but it cannot be generalized. Shenzhen Double Ten
In theory, it must also be related to the required efficiency of the batch size of the tested part, the loss caused by the side volume error, the part tolerance zone and the size distribution
 Comprehensive consideration of the situation, such as mass production’. Often automatic measurement is more economical than manual measurement, and requires higher accuracy or efficiency.
 At the same time, the simple scheme cannot meet the requirements, and the corresponding scheme must be selected from simple to complex. In the technical design stage, attention should also be paid to
 The high degree of "three modernizations" and the craftsmanship make the parts manufacturing also meet the requirements of economy. Most of the instrument production is divided into small batches and multiple products.
 Varieties, so when organizing design and production, we must flexibly and quickly adopt various advanced technologies to strive for the greatest economic effect.
     When considering the economics of the instrument, it should not be limited to the manufacturing cost of the instrument, but also the use cost of the instrument.
 In addition to the original price of the instrument, there are also maintenance fees, working hours, spare parts, operation fees (power and auxiliary materials), shutdown losses, and management fees during use.
 Management fees, training fees, etc. must be considered comprehensively before the real economic effects can be seen, and the correct decision to choose the option can be made.
    3. Efficiency requirements: Under normal circumstances, the measurement or inspection efficiency should be compatible with the production efficiency. In fact, 1 quantity efficiency
 Usually lower than production efficiency. In this case, you should try to consider the use of automated or semi-automated measurement solutions. If the process is stable
 If it is determined, a statistical test scheme can be used. In an automated production line, the entire process is carried out in strict rhythm. Measure at this time
 The speed must match the production beat. Therefore, the operation method of the instrument should be suitable for the needs of production measurement. Increase the speed of continents,
 It not only improves productivity, but sometimes it can also improve accuracy. Because the production efficiency is improved, the measurement time will be shortened and
 Reduce the influence of temperature changes on the measurement accuracy.
    The use of automated measurement can not only shorten time and increase productivity, but also improve measurement accuracy, save manpower, and eliminate
 Human error avoids repeated monotonous labor operations, reduces costs, and is convenient for remote display and feedback, avoiding radiation effects, etc.,
 This is one of the main directions of measurement technology development. Shenzhen Double Ten
     4. Reliability requirements: refers to a product that performs its specified functions without failure in a certain period of time and under certain conditions
 The probability.
    The reliability index is expressed by the probability of success in completing the specified function, and it can also be expressed by the mean time between failures or production
 Product average life, failure rate or failure rate, effectiveness, average maintenance interval or average life, etc.
     An instrument or an automatic measurement system, no matter how advanced in principle, how comprehensive in function, and in accuracy
 If the reliability is poor, the failure is frequent, and it cannot work stably for a long period of time, the instrument or system will be useless.
 Therefore, with the development of modern instruments and measurement systems, reliability requirements are becoming more and more important. Correspondingly, reliability evaluation is more convenient.
 Instead of just staying on qualitative conceptual analysis as in the past, scientific quantitative calculations should be carried out.
    5. Life expectancy: In the design, attention should be paid to the method of increasing the life, such as minimizing wear parts in the structure, using molecular
 Internal friction elements replace external friction elements; select appropriate materials and heat treatment and chemical treatment methods; stipulate reasonable use operations
 Operating procedures, maintenance methods, packaging and handling requirements, and use environmental conditions, etc.
    6. Modeling requirements: The appearance design of the instrument is also extremely important. Installation of the overall structure, beautification of the shape and details of the components
 And so on, must be seriously considered. It’s best to be specially designed by the artist to make the product beautiful, soft color, beautiful and elegant.
 The outline is neat and detailed. In short, to make people feel that it is a precision instrument, it must be carefully maintained. Meticulous operation, thereby improving
 The accuracy retention of the instrument and the service life of the instrument.


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